YOU SAID:
Matty walked down the hill to go home.
INTO JAPANESE
マティは丘を歩いて家に帰りました。
BACK INTO ENGLISH
Matty walked home on the hill.
INTO JAPANESE
マティーは丘の上を歩いて帰りました。
BACK INTO ENGLISH
Matty walked home on the hill.
That didn't even make that much sense in English.